Energy supply device and power tool having such an energy supply device
AssigneeHilti Aktiengesellschaft
InventorsMarkus HARTMANN, Robert STANGER
Life of this patent
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Abstract
An energy supply device for a power tool, wherein the energy supply device comprises at least one cell. The at least one cell has a nominal capacity of at least 1.5 ampere hours, as well as a surface area A and a volume V. The surface area A of the at least one cell is greater than eight times the cube root of the square of the volume V of the at least one cell. In addition, a ratio of resistance and surface area of the at least one cell is less than 0.2 millionm/cm2. A power tool having a energy supply device is also provided.
Claims22
1-12. (canceled)
An energy supply device for a power tool, the energy supply device comprising:
- at least one cell, the at least one cell having a nominal capacity of at least 1.5 ampere hours, as well as a surface area A and a volume V, wherein the surface area A is greater than eight times the cube root of the square of the volume V of the at least one cell, and wherein a ratio of resistance and the surface area A of the at least one cell is less than 0.2 milliohm/cm2 .
Dependencies are inferred from the claim text.